drivers/video/fbdev/omap2/omapfb/dss/hdmi4.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * HDMI interface DSS driver for TI's OMAP4 family of SoCs.
   4  * Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com/
   5  * Authors: Yong Zhi
   6  *      Mythri pk <[email protected]>
   7  */
   8
   9 #define DSS_SUBSYS_NAME "HDMI"
  10
  11 #include <linux/kernel.h>
  12 #include <linux/module.h>
  13 #include <linux/err.h>
  14 #include <linux/io.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/mutex.h>
  17 #include <linux/delay.h>
  18 #include <linux/string.h>
  19 #include <linux/platform_device.h>
  20 #include <linux/pm_runtime.h>
  21 #include <linux/clk.h>
  22 #include <linux/of.h>
  23 #include <linux/regulator/consumer.h>
  24 #include <linux/component.h>
  25 #include <video/omapfb_dss.h>
  26 #include <sound/omap-hdmi-audio.h>
  27
  28 #include "hdmi4_core.h"
  29 #include "dss.h"
  30 #include "dss_features.h"
  31 #include "hdmi.h"
  32
  33 static struct omap_hdmi hdmi;
  34
  35 static int hdmi_runtime_get(void)
  36 {
  37         int r;
  38
  39         DSSDBG("hdmi_runtime_get\n");
  40
  41         r = pm_runtime_resume_and_get(&hdmi.pdev->dev);
  42         if (WARN_ON(r < 0))
  43                 return r;
  44
  45         return 0;
  46 }
  47
  48 static void hdmi_runtime_put(void)
  49 {
  50         int r;
  51
  52         DSSDBG("hdmi_runtime_put\n");
  53
  54         r = pm_runtime_put_sync(&hdmi.pdev->dev);
  55         WARN_ON(r < 0 && r != -ENOSYS);
  56 }
  57
  58 static irqreturn_t hdmi_irq_handler(int irq, void *data)
  59 {
  60         struct hdmi_wp_data *wp = data;
  61         u32 irqstatus;
  62
  63         irqstatus = hdmi_wp_get_irqstatus(wp);
  64         hdmi_wp_set_irqstatus(wp, irqstatus);
  65
  66         if ((irqstatus & HDMI_IRQ_LINK_CONNECT) &&
  67                         irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
  68                 /*
  69                  * If we get both connect and disconnect interrupts at the same
  70                  * time, turn off the PHY, clear interrupts, and restart, which
  71                  * raises connect interrupt if a cable is connected, or nothing
  72                  * if cable is not connected.
  73                  */
  74                 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_OFF);
  75
  76                 hdmi_wp_set_irqstatus(wp, HDMI_IRQ_LINK_CONNECT |
  77                                 HDMI_IRQ_LINK_DISCONNECT);
  78
  79                 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
  80         } else if (irqstatus & HDMI_IRQ_LINK_CONNECT) {
  81                 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_TXON);
  82         } else if (irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
  83                 hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
  84         }
  85
  86         return IRQ_HANDLED;
  87 }
  88
  89 static int hdmi_init_regulator(void)
  90 {
  91         struct regulator *reg;
  92
  93         if (hdmi.vdda_reg != NULL)
  94                 return 0;
  95
  96         reg = devm_regulator_get(&hdmi.pdev->dev, "vdda");
  97
  98         if (IS_ERR(reg)) {
  99                 if (PTR_ERR(reg) != -EPROBE_DEFER)
 100                         DSSERR("can't get VDDA regulator\n");
 101                 return PTR_ERR(reg);
 102         }
 103
 104         hdmi.vdda_reg = reg;
 105
 106         return 0;
 107 }
 108
 109 static int hdmi_power_on_core(struct omap_dss_device *dssdev)
 110 {
 111         int r;
 112
 113         r = regulator_enable(hdmi.vdda_reg);
 114         if (r)
 115                 return r;
 116
 117         r = hdmi_runtime_get();
 118         if (r)
 119                 goto err_runtime_get;
 120
 121         /* Make selection of HDMI in DSS */
 122         dss_select_hdmi_venc_clk_source(DSS_HDMI_M_PCLK);
 123
 124         hdmi.core_enabled = true;
 125
 126         return 0;
 127
 128 err_runtime_get:
 129         regulator_disable(hdmi.vdda_reg);
 130
 131         return r;
 132 }
 133
 134 static void hdmi_power_off_core(struct omap_dss_device *dssdev)
 135 {
 136         hdmi.core_enabled = false;
 137
 138         hdmi_runtime_put();
 139         regulator_disable(hdmi.vdda_reg);
 140 }
 141
 142 static int hdmi_power_on_full(struct omap_dss_device *dssdev)
 143 {
 144         int r;
 145         struct omap_video_timings *p;
 146         struct omap_overlay_manager *mgr = hdmi.output.manager;
 147         struct hdmi_wp_data *wp = &hdmi.wp;
 148         struct dss_pll_clock_info hdmi_cinfo = { 0 };
 149
 150         r = hdmi_power_on_core(dssdev);
 151         if (r)
 152                 return r;
 153
 154         /* disable and clear irqs */
 155         hdmi_wp_clear_irqenable(wp, 0xffffffff);
 156         hdmi_wp_set_irqstatus(wp, 0xffffffff);
 157
 158         p = &hdmi.cfg.timings;
 159
 160         DSSDBG("hdmi_power_on x_res= %d y_res = %d\n", p->x_res, p->y_res);
 161
 162         hdmi_pll_compute(&hdmi.pll, p->pixelclock, &hdmi_cinfo);
 163
 164         r = dss_pll_enable(&hdmi.pll.pll);
 165         if (r) {
 166                 DSSERR("Failed to enable PLL\n");
 167                 goto err_pll_enable;
 168         }
 169
 170         r = dss_pll_set_config(&hdmi.pll.pll, &hdmi_cinfo);
 171         if (r) {
 172                 DSSERR("Failed to configure PLL\n");
 173                 goto err_pll_cfg;
 174         }
 175
 176         r = hdmi_phy_configure(&hdmi.phy, hdmi_cinfo.clkdco,
 177                 hdmi_cinfo.clkout[0]);
 178         if (r) {
 179                 DSSDBG("Failed to configure PHY\n");
 180                 goto err_phy_cfg;
 181         }
 182
 183         r = hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
 184         if (r)
 185                 goto err_phy_pwr;
 186
 187         hdmi4_configure(&hdmi.core, &hdmi.wp, &hdmi.cfg);
 188
 189         /* bypass TV gamma table */
 190         dispc_enable_gamma_table(0);
 191
 192         /* tv size */
 193         dss_mgr_set_timings(mgr, p);
 194
 195         r = hdmi_wp_video_start(&hdmi.wp);
 196         if (r)
 197                 goto err_vid_enable;
 198
 199         r = dss_mgr_enable(mgr);
 200         if (r)
 201                 goto err_mgr_enable;
 202
 203         hdmi_wp_set_irqenable(wp,
 204                 HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT);
 205
 206         return 0;
 207
 208 err_mgr_enable:
 209         hdmi_wp_video_stop(&hdmi.wp);
 210 err_vid_enable:
 211         hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
 212 err_phy_pwr:
 213 err_phy_cfg:
 214 err_pll_cfg:
 215         dss_pll_disable(&hdmi.pll.pll);
 216 err_pll_enable:
 217         hdmi_power_off_core(dssdev);
 218         return -EIO;
 219 }
 220
 221 static void hdmi_power_off_full(struct omap_dss_device *dssdev)
 222 {
 223         struct omap_overlay_manager *mgr = hdmi.output.manager;
 224
 225         hdmi_wp_clear_irqenable(&hdmi.wp, 0xffffffff);
 226
 227         dss_mgr_disable(mgr);
 228
 229         hdmi_wp_video_stop(&hdmi.wp);
 230
 231         hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
 232
 233         dss_pll_disable(&hdmi.pll.pll);
 234
 235         hdmi_power_off_core(dssdev);
 236 }
 237
 238 static int hdmi_display_check_timing(struct omap_dss_device *dssdev,
 239                                         struct omap_video_timings *timings)
 240 {
 241         struct omap_dss_device *out = &hdmi.output;
 242
 243         if (!dispc_mgr_timings_ok(out->dispc_channel, timings))
 244                 return -EINVAL;
 245
 246         return 0;
 247 }
 248
 249 static void hdmi_display_set_timing(struct omap_dss_device *dssdev,
 250                 struct omap_video_timings *timings)
 251 {
 252         mutex_lock(&hdmi.lock);
 253
 254         hdmi.cfg.timings = *timings;
 255
 256         dispc_set_tv_pclk(timings->pixelclock);
 257
 258         mutex_unlock(&hdmi.lock);
 259 }
 260
 261 static void hdmi_display_get_timings(struct omap_dss_device *dssdev,
 262                 struct omap_video_timings *timings)
 263 {
 264         *timings = hdmi.cfg.timings;
 265 }
 266
 267 static void hdmi_dump_regs(struct seq_file *s)
 268 {
 269         mutex_lock(&hdmi.lock);
 270
 271         if (hdmi_runtime_get()) {
 272                 mutex_unlock(&hdmi.lock);
 273                 return;
 274         }
 275
 276         hdmi_wp_dump(&hdmi.wp, s);
 277         hdmi_pll_dump(&hdmi.pll, s);
 278         hdmi_phy_dump(&hdmi.phy, s);
 279         hdmi4_core_dump(&hdmi.core, s);
 280
 281         hdmi_runtime_put();
 282         mutex_unlock(&hdmi.lock);
 283 }
 284
 285 static int read_edid(u8 *buf, int len)
 286 {
 287         int r;
 288
 289         mutex_lock(&hdmi.lock);
 290
 291         r = hdmi_runtime_get();
 292         BUG_ON(r);
 293
 294         r = hdmi4_read_edid(&hdmi.core,  buf, len);
 295
 296         hdmi_runtime_put();
 297         mutex_unlock(&hdmi.lock);
 298
 299         return r;
 300 }
 301
 302 static void hdmi_start_audio_stream(struct omap_hdmi *hd)
 303 {
 304         hdmi_wp_audio_enable(&hd->wp, true);
 305         hdmi4_audio_start(&hd->core, &hd->wp);
 306 }
 307
 308 static void hdmi_stop_audio_stream(struct omap_hdmi *hd)
 309 {
 310         hdmi4_audio_stop(&hd->core, &hd->wp);
 311         hdmi_wp_audio_enable(&hd->wp, false);
 312 }
 313
 314 static int hdmi_display_enable(struct omap_dss_device *dssdev)
 315 {
 316         struct omap_dss_device *out = &hdmi.output;
 317         unsigned long flags;
 318         int r = 0;
 319
 320         DSSDBG("ENTER hdmi_display_enable\n");
 321
 322         mutex_lock(&hdmi.lock);
 323
 324         if (out->manager == NULL) {
 325                 DSSERR("failed to enable display: no output/manager\n");
 326                 r = -ENODEV;
 327                 goto err0;
 328         }
 329
 330         r = hdmi_power_on_full(dssdev);
 331         if (r) {
 332                 DSSERR("failed to power on device\n");
 333                 goto err0;
 334         }
 335
 336         if (hdmi.audio_configured) {
 337                 r = hdmi4_audio_config(&hdmi.core, &hdmi.wp, &hdmi.audio_config,
 338                                        hdmi.cfg.timings.pixelclock);
 339                 if (r) {
 340                         DSSERR("Error restoring audio configuration: %d", r);
 341                         hdmi.audio_abort_cb(&hdmi.pdev->dev);
 342                         hdmi.audio_configured = false;
 343                 }
 344         }
 345
 346         spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
 347         if (hdmi.audio_configured && hdmi.audio_playing)
 348                 hdmi_start_audio_stream(&hdmi);
 349         hdmi.display_enabled = true;
 350         spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
 351
 352         mutex_unlock(&hdmi.lock);
 353         return 0;
 354
 355 err0:
 356         mutex_unlock(&hdmi.lock);
 357         return r;
 358 }
 359
 360 static void hdmi_display_disable(struct omap_dss_device *dssdev)
 361 {
 362         unsigned long flags;
 363
 364         DSSDBG("Enter hdmi_display_disable\n");
 365
 366         mutex_lock(&hdmi.lock);
 367
 368         spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
 369         hdmi_stop_audio_stream(&hdmi);
 370         hdmi.display_enabled = false;
 371         spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);
 372
 373         hdmi_power_off_full(dssdev);
 374
 375         mutex_unlock(&hdmi.lock);
 376 }
 377
 378 static int hdmi_core_enable(struct omap_dss_device *dssdev)
 379 {
 380         int r = 0;
 381
 382         DSSDBG("ENTER omapdss_hdmi_core_enable\n");
 383
 384         mutex_lock(&hdmi.lock);
 385
 386         r = hdmi_power_on_core(dssdev);
 387         if (r) {
 388                 DSSERR("failed to power on device\n");
 389                 goto err0;
 390         }
 391
 392         mutex_unlock(&hdmi.lock);
 393         return 0;
 394
 395 err0:
 396         mutex_unlock(&hdmi.lock);
 397         return r;
 398 }
 399
 400 static void hdmi_core_disable(struct omap_dss_device *dssdev)
 401 {
 402         DSSDBG("Enter omapdss_hdmi_core_disable\n");
 403
 404         mutex_lock(&hdmi.lock);
 405
 406         hdmi_power_off_core(dssdev);
 407
 408         mutex_unlock(&hdmi.lock);
 409 }
 410
 411 static int hdmi_connect(struct omap_dss_device *dssdev,
 412                 struct omap_dss_device *dst)
 413 {
 414         struct omap_overlay_manager *mgr;
 415         int r;
 416
 417         r = hdmi_init_regulator();
 418         if (r)
 419                 return r;
 420
 421         mgr = omap_dss_get_overlay_manager(dssdev->dispc_channel);
 422         if (!mgr)
 423                 return -ENODEV;
 424
 425         r = dss_mgr_connect(mgr, dssdev);
 426         if (r)
 427                 return r;
 428
 429         r = omapdss_output_set_device(dssdev, dst);
 430         if (r) {
 431                 DSSERR("failed to connect output to new device: %s\n",
 432                                 dst->name);
 433                 dss_mgr_disconnect(mgr, dssdev);
 434                 return r;
 435         }
 436
 437         return 0;
 438 }
 439
 440 static void hdmi_disconnect(struct omap_dss_device *dssdev,
 441                 struct omap_dss_device *dst)
 442 {
 443         WARN_ON(dst != dssdev->dst);
 444
 445         if (dst != dssdev->dst)
 446                 return;
 447
 448         omapdss_output_unset_device(dssdev);
 449
 450         if (dssdev->manager)
 451                 dss_mgr_disconnect(dssdev->manager, dssdev);
 452 }
 453
 454 static int hdmi_read_edid(struct omap_dss_device *dssdev,
 455                 u8 *edid, int len)
 456 {
 457         bool need_enable = !hdmi.core_enabled;
 458         int r;
 459
 460         if (need_enable) {
 461                 r = hdmi_core_enable(dssdev);
 462                 if (r)
 463                         return r;
 464         }
 465
 466         r = read_edid(edid, len);
 467
 468         if (need_enable)
 469                 hdmi_core_disable(dssdev);
 470
 471         return r;
 472 }
 473
 474 static int hdmi_set_infoframe(struct omap_dss_device *dssdev,
 475                 const struct hdmi_avi_infoframe *avi)
 476 {
 477         hdmi.cfg.infoframe = *avi;
 478         return 0;
 479 }
 480
 481 static int hdmi_set_hdmi_mode(struct omap_dss_device *dssdev,
 482                 bool hdmi_mode)
 483 {
 484         hdmi.cfg.hdmi_dvi_mode = hdmi_mode ? HDMI_HDMI : HDMI_DVI;
 485         return 0;
 486 }
 487
 488 static const struct omapdss_hdmi_ops hdmi_ops = {
 489         .connect                = hdmi_connect,
 490         .disconnect             = hdmi_disconnect,
 491
 492         .enable                 = hdmi_display_enable,
 493         .disable                = hdmi_display_disable,
 494
 495         .check_timings          = hdmi_display_check_timing,
 496         .set_timings            = hdmi_display_set_timing,
 497         .get_timings            = hdmi_display_get_timings,
 498
 499         .read_edid              = hdmi_read_edid,
 500         .set_infoframe          = hdmi_set_infoframe,
 501         .set_hdmi_mode          = hdmi_set_hdmi_mode,
 502 };
 503
 504 static void hdmi_init_output(struct platform_device *pdev)
 505 {
 506         struct omap_dss_device *out = &hdmi.output;
 507
 508         out->dev = &pdev->dev;
 509         out->id = OMAP_DSS_OUTPUT_HDMI;
 510         out->output_type = OMAP_DISPLAY_TYPE_HDMI;
 511         out->name = "hdmi.0";
 512         out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
 513         out->ops.hdmi = &hdmi_ops;
 514         out->owner = THIS_MODULE;
 515
 516         omapdss_register_output(out);
 517 }
 518
 519 static void hdmi_uninit_output(struct platform_device *pdev)
 520 {
 521         struct omap_dss_device *out = &hdmi.output;
 522
 523         omapdss_unregister_output(out);
 524 }
 525
 526 static int hdmi_probe_of(struct platform_device *pdev)
 527 {
 528         struct device_node *node = pdev->dev.of_node;
 529         struct device_node *ep;
 530         int r;
 531
 532         ep = omapdss_of_get_first_endpoint(node);
 533         if (!ep)
 534                 return 0;
 535
 536         r = hdmi_parse_lanes_of(pdev, ep, &hdmi.phy);
 537         if (r)
 538                 goto err;
 539
 540         of_node_put(ep);
 541         return 0;
 542
 543 err:
 544         of_node_put(ep);
 545         return r;
 546 }
 547
 548 /* Audio callbacks */
 549 static int hdmi_audio_startup(struct device *dev,
 550                               void (*abort_cb)(struct device *dev))
 551 {
 552         struct omap_hdmi *hd = dev_get_drvdata(dev);
 553         int ret = 0;
 554
 555         mutex_lock(&hd->lock);
 556
 557         if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
 558                 ret = -EPERM;
 559                 goto out;
 560         }
 561
 562         hd->audio_abort_cb = abort_cb;
 563
 564 out:
 565         mutex_unlock(&hd->lock);
 566
 567         return ret;
 568 }
 569
 570 static int hdmi_audio_shutdown(struct device *dev)
 571 {
 572         struct omap_hdmi *hd = dev_get_drvdata(dev);
 573
 574         mutex_lock(&hd->lock);
 575         hd->audio_abort_cb = NULL;
 576         hd->audio_configured = false;
 577         hd->audio_playing = false;
 578         mutex_unlock(&hd->lock);
 579
 580         return 0;
 581 }
 582
 583 static int hdmi_audio_start(struct device *dev)
 584 {
 585         struct omap_hdmi *hd = dev_get_drvdata(dev);
 586         unsigned long flags;
 587
 588         WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
 589
 590         spin_lock_irqsave(&hd->audio_playing_lock, flags);
 591
 592         if (hd->display_enabled)
 593                 hdmi_start_audio_stream(hd);
 594         hd->audio_playing = true;
 595
 596         spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
 597         return 0;
 598 }
 599
 600 static void hdmi_audio_stop(struct device *dev)
 601 {
 602         struct omap_hdmi *hd = dev_get_drvdata(dev);
 603         unsigned long flags;
 604
 605         WARN_ON(!hdmi_mode_has_audio(&hd->cfg));
 606
 607         spin_lock_irqsave(&hd->audio_playing_lock, flags);
 608
 609         if (hd->display_enabled)
 610                 hdmi_stop_audio_stream(hd);
 611         hd->audio_playing = false;
 612
 613         spin_unlock_irqrestore(&hd->audio_playing_lock, flags);
 614 }
 615
 616 static int hdmi_audio_config(struct device *dev,
 617                              struct omap_dss_audio *dss_audio)
 618 {
 619         struct omap_hdmi *hd = dev_get_drvdata(dev);
 620         int ret;
 621
 622         mutex_lock(&hd->lock);
 623
 624         if (!hdmi_mode_has_audio(&hd->cfg) || !hd->display_enabled) {
 625                 ret = -EPERM;
 626                 goto out;
 627         }
 628
 629         ret = hdmi4_audio_config(&hd->core, &hd->wp, dss_audio,
 630                                  hd->cfg.timings.pixelclock);
 631         if (!ret) {
 632                 hd->audio_configured = true;
 633                 hd->audio_config = *dss_audio;
 634         }
 635 out:
 636         mutex_unlock(&hd->lock);
 637
 638         return ret;
 639 }
 640
 641 static const struct omap_hdmi_audio_ops hdmi_audio_ops = {
 642         .audio_startup = hdmi_audio_startup,
 643         .audio_shutdown = hdmi_audio_shutdown,
 644         .audio_start = hdmi_audio_start,
 645         .audio_stop = hdmi_audio_stop,
 646         .audio_config = hdmi_audio_config,
 647 };
 648
 649 static int hdmi_audio_register(struct device *dev)
 650 {
 651         struct omap_hdmi_audio_pdata pdata = {
 652                 .dev = dev,
 653                 .version = 4,
 654                 .audio_dma_addr = hdmi_wp_get_audio_dma_addr(&hdmi.wp),
 655                 .ops = &hdmi_audio_ops,
 656         };
 657
 658         hdmi.audio_pdev = platform_device_register_data(
 659                 dev, "omap-hdmi-audio", PLATFORM_DEVID_AUTO,
 660                 &pdata, sizeof(pdata));
 661
 662         return PTR_ERR_OR_ZERO(hdmi.audio_pdev);
 663 }
 664
 665 /* HDMI HW IP initialisation */
 666 static int hdmi4_bind(struct device *dev, struct device *master, void *data)
 667 {
 668         struct platform_device *pdev = to_platform_device(dev);
 669         int r;
 670         int irq;
 671
 672         hdmi.pdev = pdev;
 673         platform_set_drvdata(pdev, &hdmi);
 674
 675         mutex_init(&hdmi.lock);
 676         spin_lock_init(&hdmi.audio_playing_lock);
 677
 678         if (pdev->dev.of_node) {
 679                 r = hdmi_probe_of(pdev);
 680                 if (r)
 681                         return r;
 682         }
 683
 684         r = hdmi_wp_init(pdev, &hdmi.wp);
 685         if (r)
 686                 return r;
 687
 688         r = hdmi_pll_init(pdev, &hdmi.pll, &hdmi.wp);
 689         if (r)
 690                 return r;
 691
 692         r = hdmi_phy_init(pdev, &hdmi.phy);
 693         if (r)
 694                 goto err;
 695
 696         r = hdmi4_core_init(pdev, &hdmi.core);
 697         if (r)
 698                 goto err;
 699
 700         irq = platform_get_irq(pdev, 0);
 701         if (irq < 0) {
 702                 DSSERR("platform_get_irq failed\n");
 703                 r = -ENODEV;
 704                 goto err;
 705         }
 706
 707         r = devm_request_threaded_irq(&pdev->dev, irq,
 708                         NULL, hdmi_irq_handler,
 709                         IRQF_ONESHOT, "OMAP HDMI", &hdmi.wp);
 710         if (r) {
 711                 DSSERR("HDMI IRQ request failed\n");
 712                 goto err;
 713         }
 714
 715         pm_runtime_enable(&pdev->dev);
 716
 717         hdmi_init_output(pdev);
 718
 719         r = hdmi_audio_register(&pdev->dev);
 720         if (r) {
 721                 DSSERR("Registering HDMI audio failed\n");
 722                 hdmi_uninit_output(pdev);
 723                 pm_runtime_disable(&pdev->dev);
 724                 return r;
 725         }
 726
 727         dss_debugfs_create_file("hdmi", hdmi_dump_regs);
 728
 729         return 0;
 730 err:
 731         hdmi_pll_uninit(&hdmi.pll);
 732         return r;
 733 }
 734
 735 static void hdmi4_unbind(struct device *dev, struct device *master, void *data)
 736 {
 737         struct platform_device *pdev = to_platform_device(dev);
 738
 739         if (hdmi.audio_pdev)
 740                 platform_device_unregister(hdmi.audio_pdev);
 741
 742         hdmi_uninit_output(pdev);
 743
 744         hdmi_pll_uninit(&hdmi.pll);
 745
 746         pm_runtime_disable(&pdev->dev);
 747 }
 748
 749 static const struct component_ops hdmi4_component_ops = {
 750         .bind   = hdmi4_bind,
 751         .unbind = hdmi4_unbind,
 752 };
 753
 754 static int hdmi4_probe(struct platform_device *pdev)
 755 {
 756         return component_add(&pdev->dev, &hdmi4_component_ops);
 757 }
 758
 759 static void hdmi4_remove(struct platform_device *pdev)
 760 {
 761         component_del(&pdev->dev, &hdmi4_component_ops);
 762 }
 763
 764 static int hdmi_runtime_suspend(struct device *dev)
 765 {
 766         dispc_runtime_put();
 767
 768         return 0;
 769 }
 770
 771 static int hdmi_runtime_resume(struct device *dev)
 772 {
 773         int r;
 774
 775         r = dispc_runtime_get();
 776         if (r < 0)
 777                 return r;
 778
 779         return 0;
 780 }
 781
 782 static const struct dev_pm_ops hdmi_pm_ops = {
 783         .runtime_suspend = hdmi_runtime_suspend,
 784         .runtime_resume = hdmi_runtime_resume,
 785 };
 786
 787 static const struct of_device_id hdmi_of_match[] = {
 788         { .compatible = "ti,omap4-hdmi", },
 789         {},
 790 };
 791
 792 static struct platform_driver omapdss_hdmihw_driver = {
 793         .probe          = hdmi4_probe,
 794         .remove_new     = hdmi4_remove,
 795         .driver         = {
 796                 .name   = "omapdss_hdmi",
 797                 .pm     = &hdmi_pm_ops,
 798                 .of_match_table = hdmi_of_match,
 799                 .suppress_bind_attrs = true,
 800         },
 801 };
 802
 803 int __init hdmi4_init_platform_driver(void)
 804 {
 805         return platform_driver_register(&omapdss_hdmihw_driver);
 806 }
 807
 808 void hdmi4_uninit_platform_driver(void)
 809 {
 810         platform_driver_unregister(&omapdss_hdmihw_driver);
 811 }